Davek you probably need springs and struts on the front. I had the lower control arm bushings done with the springs and it made a heck of a difference in ride and handling. The other stuff can be done piece by piece if you are on a budget.
These cars run and run well for a long time. I have over 200k on my 1990 190E and it doesn't seem like its a high miler.
1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T